Bauch, Henning A; Polyakova, Ye I (2003): (Table 1) Age determination of sediment core PS51/092-12 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.841800, Supplement to: Bauch, HA; Polyakova, YI (2003): Diatom-inferred salinity records from the Arctic Siberian Margin: Implications for fluvial runoff patterns during the Holocene. Paleoceanography, 18(2), 1027, https://doi.org/10.1029/2002PA000847
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Abstract:
Diatom assemblages were employed to study temporal changes of Siberian river runoff on the Laptev Sea shelf. Using a correlation between freshwater diatoms (%) in core-top sediments and summer surface water salinities from the inner Kara Sea, salinity conditions were reconstructed for a site northeast of the Lena River Delta (present water depth 32 m) since 9 calendar years (cal) ka. The reconstruction indicate a strong, near-coastal, and river-influenced environment at the site until about 8.6 cal ka. Corroborated by comparison with other proxy records from further to the east, surface salinities increased from 9 to 14 until about 7.4 cal ka, owing to ongoing global sea level rise and synchronous southward shift of the coastline. Although riverine water became less influential at the site since then, salinities still varied between 12.5 and 15, particularly during the last 3.5 kyr. These more recent salinity fluctuations agree well with reconstructions from just north of the Lena Delta, emphasizing the strong linkage between shelf hydrography and riverine discharge patterns in Arctic Siberia.
Coverage:
Latitude: 74.593167 * Longitude: 130.138833
Date/Time Start: 1998-08-03T15:30:00 * Date/Time End: 1998-08-03T15:50:00
Minimum DEPTH, sediment/rock: 0.02 m * Maximum DEPTH, sediment/rock: 5.00 m
Event(s):
PS51/092-12 * Latitude: 74.593167 * Longitude: 130.138833 * Date/Time Start: 1998-08-03T15:30:00 * Date/Time End: 1998-08-03T15:50:00 * Elevation: -32.0 m * Penetration: 7.1 m * Recovery: 5.61 m * Location: Laptev Sea * Campaign: ARK-XIV/1b (PS51 Transdrift-V) * Basis: Polarstern * Method/Device: Kasten corer (KAL)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Laboratory code/label | Lab label | Bauch, Henning A | |||
| 2 | Age, dated material | Dated material | Bauch, Henning A | |||
| 3 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 4 | Age, dated | Age dated | ka | Bauch, Henning A | Age, 14C AMS | |
| 5 | Age, dated standard deviation | Age dated std dev | ± | Bauch, Henning A | Age, 14C AMS | |
| 6 | Calendar age | Cal age | ka BP | Bauch, Henning A | Age, 14C calibrated, CALIB 4.3 (Stuiver et al., 1998) | -370 a correction |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
35 data points
Data
| 1 Lab label | 2 Dated material | 3 Depth sed [m] | 4 Age dated [ka] | 5 Age dated std dev [±] | 6 Cal age [ka BP] |
|---|---|---|---|---|---|
| KIA-6877 | Leionucula bellotii | 0.02 | 0.590 | 0.025 | 0.273 |
| KIA-6878 | Leionucula bellotii | 0.64 | 1.505 | 0.035 | 1.078 |
| KIA-6879 | Macoma cf. moesta | 1.60 | 1.680 | 0.035 | 1.267 |
| KIA-12931 | Macoma calcarea | 2.10 | 3.810 | 0.035 | 3.809 |
| KIA-6880 | Macoma sp. | 3.00 | 6.725 | 0.040 | 7.270 |
| KIA-6881 | Leionucula bellotii | 4.02 | 7.280 | 0.045 | 7.754 |
| KIA-6882 | Macoma sp. | 5.00 | 7.950 | 0.055 | 8.408 |